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7 Commits

Author SHA1 Message Date
Nick Lewycky 76c6299f88 Don't define these unless we plan to use them. 
llvm-svn: 145289
 2011-11-28 22:14:02 +00:00
Nick Lewycky 6804d27048 Move WEAK marking to the declaration. 
llvm-svn: 144603
 2011-11-15 01:23:22 +00:00
Nick Lewycky b2489b7484 Fix linking for some users who already have tsan enabled code and are trying to 
link it against llvm code, by making our definitions weak. "Some users."

llvm-svn: 144596
 2011-11-15 00:14:04 +00:00
Nick Lewycky fe856110aa Add support for tsan annotations (thread sanitizer, a valgrind-based tool). 
These annotations are disabled entirely when either ENABLE_THREADS is off, or
building a release build. When enabled, they add calls to functions with no
statements to ManagedStatic's getters.

Use these annotations to inform tsan that the race used inside ManagedStatic
initialization is actually benign. Thanks to Kostya Serebryany for helping
write this patch!

llvm-svn: 144567
 2011-11-14 20:50:16 +00:00
Duncan Sands a1c44332e5 Revert previous commit. It seems that whether casting to void 
is valid or not depends on which system you build.

llvm-svn: 134321
 2011-07-02 13:14:22 +00:00
Duncan Sands dda99eef54 Supress gcc-4.5 warning about the result not being used. 
llvm-svn: 134319
 2011-07-02 13:06:23 +00:00
Michael J. Spencer 447762da85 Merge System into Support. 
llvm-svn: 120298
 2010-11-29 18:16:10 +00:00